Title: Study on Extracting Chlorogenic Acid and Flavonoids from Eucommia Leaves
Abstract: [Objective] Extraction of chlorogenic acid and flavonoids from Eucommia leaves is studied.[Method] The process condition of extracting chlorogenic acid and flavonoids from Eucommia leaves by ethanol with ultrasonic is studied.Evaluation index is the yield of chlorogenic acid.Chlorogenic acid and flavonoids contents are measured by UV-spectrophotometry.[Result]The optimum process condition is apply ultrasonic extraction at 60 ℃ for 50 min,using 50% ethanol as solvent with 1∶10(g∶ml) material to solvent ratio.Extract is concentrated and extracted by ethyl acetate.The content of flavonoids extracts is 37.61%,obtained from the upper ester layer after purification.The lower water layer is acidified and then extracted by ethyl acetate.the content of chlorogenic acid extracts is 23.4%,obtained from ester layer after purification.[Conclusion] The operation is simple,low cost,high extraction and separation effect.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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Cited By Count: 2
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